diff --git a/src/libcore/num/mod.rs b/src/libcore/num/mod.rs index 090147c9fe4..30b7b454684 100644 --- a/src/libcore/num/mod.rs +++ b/src/libcore/num/mod.rs @@ -2152,6 +2152,7 @@ macro_rules! uint_impl { ", $Feature, "assert_eq!(", stringify!($SelfT), "::min_value(), 0);", $EndFeature, " ```"), #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_promotable] #[inline] pub const fn min_value() -> Self { 0 } } @@ -2168,6 +2169,7 @@ pub const fn min_value() -> Self { 0 } stringify!($MaxV), ");", $EndFeature, " ```"), #[stable(feature = "rust1", since = "1.0.0")] + #[rustc_promotable] #[inline] pub const fn max_value() -> Self { !0 } } diff --git a/src/test/ui/consts/auxiliary/promotable_const_fn_lib.rs b/src/test/ui/consts/auxiliary/promotable_const_fn_lib.rs new file mode 100644 index 00000000000..f6bbcc60e4e --- /dev/null +++ b/src/test/ui/consts/auxiliary/promotable_const_fn_lib.rs @@ -0,0 +1,31 @@ +// Copyright 2015 The Rust Project Developers. See the COPYRIGHT +// file at the top-level directory of this distribution and at +// http://rust-lang.org/COPYRIGHT. +// +// Licensed under the Apache License, Version 2.0 or the MIT license +// , at your +// option. This file may not be copied, modified, or distributed +// except according to those terms. + +// Crate that exports a const fn. Used for testing cross-crate. + +#![feature(staged_api, rustc_attrs)] +#![stable(since="1.0.0", feature = "mep")] + +#![crate_type="rlib"] + +#[rustc_promotable] +#[stable(since="1.0.0", feature = "mep")] +#[inline] +pub const fn foo() -> usize { 22 } + +#[stable(since="1.0.0", feature = "mep")] +pub struct Foo(usize); + +impl Foo { + #[stable(since="1.0.0", feature = "mep")] + #[inline] + #[rustc_promotable] + pub const fn foo() -> usize { 22 } +} diff --git a/src/test/ui/consts/promote_fn_calls.rs b/src/test/ui/consts/promote_fn_calls.rs new file mode 100644 index 00000000000..045322de347 --- /dev/null +++ b/src/test/ui/consts/promote_fn_calls.rs @@ -0,0 +1,13 @@ +// compile-pass +// aux-build:promotable_const_fn_lib.rs + +#![feature(nll)] + +extern crate promotable_const_fn_lib; + +use promotable_const_fn_lib::{foo, Foo}; + +fn main() { + let x: &'static usize = &foo(); + let x: &'static usize = &Foo::foo(); +} diff --git a/src/test/ui/consts/promote_fn_calls_std.rs b/src/test/ui/consts/promote_fn_calls_std.rs new file mode 100644 index 00000000000..0350708d673 --- /dev/null +++ b/src/test/ui/consts/promote_fn_calls_std.rs @@ -0,0 +1,30 @@ +// compile-pass + +#![feature(nll)] + +fn main() { + let x: &'static u8 = &u8::max_value(); + let x: &'static u16 = &u16::max_value(); + let x: &'static u32 = &u32::max_value(); + let x: &'static u64 = &u64::max_value(); + let x: &'static u128 = &u128::max_value(); + let x: &'static usize = &usize::max_value(); + let x: &'static u8 = &u8::min_value(); + let x: &'static u16 = &u16::min_value(); + let x: &'static u32 = &u32::min_value(); + let x: &'static u64 = &u64::min_value(); + let x: &'static u128 = &u128::min_value(); + let x: &'static usize = &usize::min_value(); + let x: &'static i8 = &i8::max_value(); + let x: &'static i16 = &i16::max_value(); + let x: &'static i32 = &i32::max_value(); + let x: &'static i64 = &i64::max_value(); + let x: &'static i128 = &i128::max_value(); + let x: &'static isize = &isize::max_value(); + let x: &'static i8 = &i8::min_value(); + let x: &'static i16 = &i16::min_value(); + let x: &'static i32 = &i32::min_value(); + let x: &'static i64 = &i64::min_value(); + let x: &'static i128 = &i128::min_value(); + let x: &'static isize = &isize::min_value(); +}